Development of an antimicrobial material made of graphene oxide, polylactic acid/polyhydroxybutyrate, and CuO nanoparticles and its reprocessing effect on its properties

Polymer Composites, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 21, 2025

Abstract In the present study nanocomposites made of polylactic acid (PLA), polyhydroxybutyrate (PHB), graphene oxide (GO), and copper (II) (CuO) nanoparticles on three compositions (1, 3 5 wt%), obtained through melt extrusion were developed. Properties in their first second processing evaluated, characterized colorimetry L*a*b*, Fourier‐transform infrared spectroscopy (FTIR), x‐ray diffraction (XRD), Differential scanning calorimetry (DSC), Thermogravimetric analysis (TGA), mechanical properties (ASTM D638 standard), electron microscopy–energy‐dispersive (SEM‐EDX) antimicrobial activity under dynamic contact with ATCC25922 Escherichia coli . The results presented variations color crystallinity between different nanocomposites. Additionally, a higher was observed containing CuO, achieving up to 100% bacterial reduction at 3% nanoparticle content. When evaluating influence thermic processing, it could be seen an acceleration degradation process polymeric chains addition improvement dispersion nanoparticles, which reduced agglomeration generated crystalline state Highlights exhibit high activity. GO CuO show tendency agglomerate. Reprocessing induces chain scission. also enhances matrix homogenization. nanofiller

Language: Английский

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Optimization of the ductile properties of poly(lactic acid) (PLA) using green citrate-based plasticizers and itaconic anhydride grafted PLA (PLA-g-IA)

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: unknown, P. 142034 - 142034

Published: March 1, 2025

Language: Английский

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Tuned flexibility with phenethyl esters plasticized polylactic acid

Materials Today Communications, Journal Year: 2025, Volume and Issue: unknown, P. 112437 - 112437

Published: April 1, 2025

Language: Английский

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A novel water-soluble antibacterial films of gelatin/carboxymethyl cellulose sodium incorporated with Grifola frondosa polysaccharides and pearl powder for fruit preservation

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: 311, P. 143704 - 143704

Published: April 30, 2025

Language: Английский

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A novel 3D-printed biomass materials-plastic composite with enhanced interfacial compatibility and UV aging resistance developed by dual plasticizer strategy

Materials Today Communications, Journal Year: 2025, Volume and Issue: unknown, P. 112697 - 112697

Published: May 1, 2025

Language: Английский

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Naturally occurring eugenyl acetate as biobased plasticizer for sustainable polylactide formulations with improved toughness

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: 311, P. 144152 - 144152

Published: May 12, 2025

In this study, we explore the potential of eugenyl acetate (EAc), a naturally occurring ester eugenol, as biobased plasticizer to overcome intrinsic brittleness polylactide (PLA) derived from starch. A theoretical assessment miscibility between PLA and EAc is carried out. Our findings demonstrate that shows exceptional with PLA, confirmed by their similar solubility parameters (EAc-19.83 MPa1/2, PLA-20.66 MPa1/2), an interaction parameter χ = 0.39. The incorporation improves ductility strain at break increasing 427.7 % 20 wt% EAc, compared brittle 10.2 for neat PLA. plasticizing effect also leads considerable reduction in glass transition temperature 60.4 °C 35.7 EAc. Scanning electron microscopy reveals no phase separation development plastic deformation formulations 15-20 Additionally, all plasticized exhibit full biodegradation controlled compost conditions <8 weeks. These results contribute advancing PLA-based are both high-performance eco-friendly, supporting broader goals sustainable polymer science.

Language: Английский

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Plasticization of Poly(lactic acid) by Bio-based Plasticizers Derived from Castor Oil

Journal of Polymers and the Environment, Journal Year: 2025, Volume and Issue: unknown

Published: May 23, 2025

Language: Английский

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Mussel-inspired polydopamine modified mica with enhanced mechanical strength and thermal performance of poly(lactic acid) coating

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 273, P. 133148 - 133148

Published: June 17, 2024

Language: Английский

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High toughness and fast home-compost biodegradable packaging films derived from polylactic acid/thermoplastic starch/para-rubber ternary blends

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Aug. 10, 2024

This research aims to formulate biobased and biodegradable packaging films with high toughness fast home-compost biodegradation using ternary blends of polylactic acid (PLA), Para rubber (NR), thermoplastic starch (TPS) through blown-film extrusion. The TPS content in this work ranges from 5 20 wt%, while the PLA: NR ratio is fixed at 70:30. At ratio, blend 10 wt% (PNT10) exhibited highest % elongation break tensile toughness. Peroxide radical initiator was investigated as a potential additive for improving properties blend. Our binary interaction study indicated that peroxide initiated grafting reactions PLA-NR NR-TPS pairs, no occurred between PLA TPS. In blends, (0.5 wt%) increased up 120%, reaching 7255 MJ/m

Language: Английский

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Active packaging film of poly(lactic acid) incorporated with plant-based essential oils of Trachyspermum ammi as an antimicrobial agent and vanilla as an aroma corrector for waffles

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 278, P. 135086 - 135086

Published: Aug. 25, 2024

Language: Английский

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